caskroom/homebrew-cask — pull request #7269 by Partyschaum (2014-11-11 17:09:44+00:00)
Title: Fixed licence description

Since `:gratis` is no valid license categroy as required by the [license stanza details](https://github.com/caskroom/homebrew-cask/blob/master/doc/CASK_LANGUAGE_REFERENCE.md#license-stanza-details).